<template>
    <div class="app-container">
      <el-row :gutter="10" class="mb8">
        <el-col :span="1.5">
          <el-button
              type="primary"
              plain
              icon="Upload"
              @click="handleImport"
          >导入</el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
              type="warning"
              plain
              icon="Download"
              @click="handleExport"
          >导出</el-button>
        </el-col>
        <right-toolbar></right-toolbar>
      </el-row>
  
      <el-table
          v-loading="loading"
          :data="categoryList"
          style="width: 100%"
          row-key="id"
          border
          lazy
          :load="fetchData"
          :tree-props="{ children: 'children', hasChildren: 'hasChildren' }"
      >
        <el-table-column prop="name" label="分类名称" />
        <el-table-column prop="imageUrl" label="图标" #default="scope">
          <img :src="scope.row.imageUrl" width="50" />
        </el-table-column>
        <el-table-column prop="orderNum" label="排序" />
        <el-table-column prop="status" label="状态" #default="scope">
          {{ scope.row.status == 1 ? '正常' : '停用' }}
        </el-table-column>
        <el-table-column prop="createTime" label="创建时间" />
      </el-table>
      <el-dialog :title="upload.title" v-model="upload.open" width="400px" append-to-body>
  <el-upload
      ref="uploadRef"
      :limit="1"
      accept=".xlsx, .xls"
      :headers="upload.headers"
      :action="upload.url + '?updateSupport=' + upload.updateSupport"
      :disabled="upload.isUploading"
      :on-progress="handleFileUploadProgress"
      :on-success="handleFileSuccess"
      :auto-upload="false"
      drag
  >
    <el-icon class="el-icon--upload"><upload-filled /></el-icon>
    <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
    <template #tip>
      <div class="el-upload__tip text-center">
        <div class="el-upload__tip">
          <el-checkbox v-model="upload.updateSupport" />是否更新已经存在的用户数据
        </div>
        <span>仅允许导入xls、xlsx格式文件。</span>
        <el-link type="primary" :underline="false" style="font-size:12px;vertical-align: baseline;" @click="importTemplate">下载模板</el-link>
      </div>
    </template>
  </el-upload>
  <template #footer>
    <div class="dialog-footer">
      <el-button type="primary" @click="submitFileForm">确 定</el-button>
      <el-button @click="upload.open = false">取 消</el-button>
    </div>
  </template>
</el-dialog>

    </div>
  </template>
  
<script setup name="Category">
import {listCategory} from "@/api/product/category"

////////////////////导入
import { getToken } from "@/utils/auth";

/*** 分类导入参数 */
const upload = reactive({
  // 是否显示弹出层（用户导入）
  open: false,
  // 弹出层标题（用户导入）
  title: "",
  // 是否禁用上传
  isUploading: false,
  // 是否更新已经存在的用户数据
  updateSupport: 0,
  // 设置上传的请求头部
  headers: { Authorization: "Bearer " + getToken() },
  // 上传的地址
  url: import.meta.env.VITE_APP_BASE_API + "/product/category/import"
});

/** 导入按钮操作 */
function handleImport() {
  upload.title = "用户导入";
  upload.open = true;
}
/** 下载模板操作 */
function importTemplate() {
  proxy.download("product/category/importTemplate", {
  }, `category_template_${new Date().getTime()}.xlsx`);
};
// 文件上传中处理
function handleFileUploadProgress(event, file, fileList) {
  upload.isUploading = true;
}

// 文件上传成功处理
const handleFileSuccess = (response, file, fileList) => {
  upload.open = false;
  upload.isUploading = false;
  proxy.$refs["uploadRef"].handleRemove(file);
  proxy.$alert("<div style='overflow: auto;overflow-x: hidden;max-height: 70vh;padding: 10px 20px 0;'>" + response.msg + "</div>", "导入结果", { dangerouslyUseHTMLString: true });
  getList(0);
};
// 提交上传文件
function submitFileForm() {
  proxy.$refs["uploadRef"].submit();
}
////////////////////

////////////////////导出
const { proxy } = getCurrentInstance();

const data = reactive({
  queryParams: {
  }

});
const { queryParams } = toRefs(data);

/** 导出按钮操作 */
function handleExport() {
  proxy.download('product/category/export', {
    ...queryParams.value
  }, `category_${new Date().getTime()}.xlsx`)
}

//////////////////////
const categoryList = ref([]);
  
//分类列表的方法
function getList(id) {
  listCategory(id).then(response => {
    categoryList.value = response.data
  })
}

//懒加载效果，点击显示下一层数据
//数据列表
const fetchData = async (row, treeNode, resolve) => {
  // 向后端发送请求获取数据
  const {code, data, message} = await listCategory(row.id)
  // 返回数据
  resolve(data)
}
  
//调用方法
getList(0)
</script>